33214-13-0

Basic information

• Product Name: Diphosphorous acid, tetraphenyl ester
• CAS NO: 33214-13-0
• Molecular Formula: C24H20O5P2
• Molecular Weight: 450.367
• Mol File: 33214-13-0.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: Diphosphorous acid, tetraphenyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Diphosphorous acid, tetraphenyl ester(33214-13-0)
• EPA Substance Registry System: Diphosphorous acid, tetraphenyl ester(33214-13-0)

Safety Data

• Hazardous Substances Data: 33214-13-0(Hazardous Substances Data)

Upstream product

• 54921-72-1 phenyl H-phosphonate ammonium salt 
• 2524-64-3 chlorophosphoric acid diphenyl ester 

Relevant articles and documents

Studies on aryl H-phosphonates. 3. Mechanistic investigations related to the disproportionation of diphenyl H-phosphonate under anhydrous basic conditions

Diphenyl H-phosphonate undergoes under anhydrous reaction conditions a base-promoted disproportionation to triphenyl phosphite and phenyl H- phosphonate. On the basis of 31P NMR data the most likely mechanism for this transformation was proposed. In order to substantiate these findings and to get a deeper insight into the chemistry of aryl H-phosphonate esters, we carried out also some studies on activation of phenyl and diphenyl H- phosphonates with various condensing agents. We found that aryl vs alkyl esters of phosphonic acid often follow different reaction pathways during the activation, and this can most likely be traced back to higher electrophilicity of the phosphorus centre and to higher reactivity of the P- H bonds in aryl H-phosphonate derivatives.